In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Learn More
Become an ACI Member
Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
American Concrete Institute 38800 Country Club Dr. Farmington Hills, MI 48331-3439 USA
Phone: 1.248.848.3700 Fax: 1.248.848.3701 Staff Directory
Chat with Us Online Now
Feedback via Email Phone: 1.248.848.3800
Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Double corbel
Author(s): Tjen N. Tjhin and Daniel A. Kuchma
Publication: Special Publication
Volume: 208
Issue:
Appears on pages(s): 117-128
Keywords:
Date: 10/29/2002
Abstract:A double corbel projecting from an interior column is designed using the strut-and-tie method according to ACI 318-02 Appendix A. The corbel transfers precast beam reaction forces, Vu of 61.8 kips (275 kN) acting at 6 in. (152 mm) from the face of the column at both ends. To account for beam creep and shrinkage deformations, a factored horizontal force, Nuc of 14.3 kips (63.6 kN) is assumed to develop at each side of the corbel top. The column is 14 in. (356 mm) square. The upper column carries a factored compressive axial load, Pu of 275 kips (1223 kN). The compressive strength of concrete, fc and yield strength of steel reinforcement, fy are taken as 4 ksi (27.6 MPa) and 60 ksi (414 MPa), respectively. Normal-weight concrete is assumed. The selected dimensions including the bearing plates are shown in Fig. (3.2-2). The shear span to depth ratio, a/d, is 0.38. A simple strut-and-tie model shown in Fig. (3.2-3) was used for the design. The provided main tie reinforcement is 7 #4 (#13 mm) bars. The anchorage of these bars is provided by welding each end of the bars to a structural steel angle of 4 in. x 4 in, x 1/2 in. (102 mm x 102 mm x 13 mm). The reinforcement details are shown in Fig. (3.2-5).
Click here to become an online Journal subscriber